Astronomy is the study of everything, because
everything is a part of the Universe. There are actually
different fields of study within Astronomy. Cosmologists study
the Universe as a whole (cosmology). They help us understand the structure
of galaxies, black holes, etc. Astrometrists measure distances
in space (astrometry). Planetologists study both the planets of our Solar
System as well as distant exo-planets (planetology). Radio Astronomers study
the universe using radio antenna
telescopes. There are even astronomers who never use any kind
of telescopes at all. Instead, they look at thousands of numbers
collected by others. They try to use math to explain how the
Universe works.

Assignment # 1:

Write a paragraph about each type of astronomer
discussed above. See
if you can find information about any other types of astronomers.